All credit goes to him, this is simply an implementation of the same
logic in Python (small differences below).

The JsonLogic format is designed to allow you to share rules (logic)
between front-end and back-end code (regardless of language difference),
even to store logic along with a record in a database. JsonLogic is
documented extensively at JsonLogic.com,
including examples of every supported
operation and a place to try
out rules in your browser.

The same format can also be executed in PHP by the library
json-logic-php

Examples

Simple

fromjson_logicimportjsonLogicjsonLogic({"==":[1,1]})# True

This is a simple test, equivalent to 1 == 1. A few things about the
format:

The operator is always in the “key” position. There is only one key
per JsonLogic rule.

The values are typically an array.

Each value can be a string, number, boolean, array (non-associative),
or null

Compound

Here we’re beginning to nest rules.

jsonLogic({"and":[{">":[3,1]},{"<":[1,3]}]})# True

In an infix language (like Python) this could be written as:

((3>1)and(1<3))

Data-Driven

Obviously these rules aren’t very interesting if they can only take
static literal data. Typically jsonLogic will be called with a rule
object and a data object. You can use the var operator to get
attributes of the data object:

jsonLogic({"var":["a"]},# Rule{a:1,b:2}# Data)# 1

If you like, we support syntactic
sugar on unary
operators to skip the array around values:

jsonLogic({"var":"a"},{a:1,b:2})# 1

You can also use the var operator to access an array by numeric
index:

jsonLogic({"var":1},["apple","banana","carrot"])# "banana"

Here’s a complex rule that mixes literals and data. The pie isn’t ready
to eat unless it’s cooler than 110 degrees, and filled with apples.